Question

Arianna correctly simplified an expression. When she substituted x= 2 into the simplified expression, the value was –4. Which could be Arianna’s original expression?
1/6(-3x-24)
1/6(-5x-8)
1/6(-10x-4)
1/6(-12x-16

Answer 1

Answer:

$\frac{1}{6}(-10x-4)$

Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

1. You have that  she substituted $x=2$ into the simplified expression and the result was -4.

2. Therefore, if you substitute $x=2$ into all the expressions shown in the options, you will see that the result of the expression $\frac{1}{6}(-10x-4)$ is -4, as you can see below:

$\frac{1}{6}(-10(2)-4)=\frac{1}{6}(-24)=-4$